After Sora defeated Yozora, he found a Stone. A Stone that he uses to get home but not the one he knew. Sora ends up on the place of his birth and meets his real family. However, his journey didn't end there. Threats both new and old come to threaten all life as Sora knew. Now, he and his family must gather all six Infinity Stones to stop them and reunite with his friends...
Same Summary from The Kingdom Hearts Spider-Man.